{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:BXL4R2XK6JODNFTK5QWE53YEYO","short_pith_number":"pith:BXL4R2XK","schema_version":"1.0","canonical_sha256":"0dd7c8eaeaf25c36966aec2c4eef04c39e5286f9c31dd55ba713e1e58059ef7a","source":{"kind":"arxiv","id":"0908.3810","version":2},"attestation_state":"computed","paper":{"title":"Novae Ejecta as Colliding Shells","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Elena Mason, Robert Williams","submitted_at":"2009-08-26T13:07:46Z","abstract_excerpt":"Following on our initial absorption-line analysis of fifteen novae spectra we present additional evidence for the existence of two distinct components of novae ejecta having different origins. As argued in Paper I one component is the rapidly expanding gas ejected from the outer layers of the white dwarf by the outburst. The second component is pre-existing outer, more slowly expanding circumbinary gas that represents ejecta from the secondary star or accretion disk. We present measurements of the emission-line widths that show them to be significantly narrower than the broad P Cygni profiles "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0908.3810","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-08-26T13:07:46Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"f55d61ccc61e60bf76dc6ee59e9b4aad3e99565d046dce98bd73853447e36de9","abstract_canon_sha256":"2b4c646a2bfea89ab0f4a54875bb1a668fd1261154eb321d2ad1ca91e7e28bf1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:22.745856Z","signature_b64":"Q5uquCseZbg5qpDfD5lXlLdFyhZxQZtg1jCkJjkqCpZDJ3LPv8luNn6k/vNc2VivP8xHY/GJnbCLhANvvoeNCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0dd7c8eaeaf25c36966aec2c4eef04c39e5286f9c31dd55ba713e1e58059ef7a","last_reissued_at":"2026-05-18T02:12:22.745003Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:22.745003Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Novae Ejecta as Colliding Shells","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Elena Mason, Robert Williams","submitted_at":"2009-08-26T13:07:46Z","abstract_excerpt":"Following on our initial absorption-line analysis of fifteen novae spectra we present additional evidence for the existence of two distinct components of novae ejecta having different origins. As argued in Paper I one component is the rapidly expanding gas ejected from the outer layers of the white dwarf by the outburst. The second component is pre-existing outer, more slowly expanding circumbinary gas that represents ejecta from the secondary star or accretion disk. We present measurements of the emission-line widths that show them to be significantly narrower than the broad P Cygni profiles "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.3810","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"0908.3810","created_at":"2026-05-18T02:12:22.745130+00:00"},{"alias_kind":"arxiv_version","alias_value":"0908.3810v2","created_at":"2026-05-18T02:12:22.745130+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.3810","created_at":"2026-05-18T02:12:22.745130+00:00"},{"alias_kind":"pith_short_12","alias_value":"BXL4R2XK6JOD","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_16","alias_value":"BXL4R2XK6JODNFTK","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_8","alias_value":"BXL4R2XK","created_at":"2026-05-18T12:25:58.837520+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/BXL4R2XK6JODNFTK5QWE53YEYO","json":"https://pith.science/pith/BXL4R2XK6JODNFTK5QWE53YEYO.json","graph_json":"https://pith.science/api/pith-number/BXL4R2XK6JODNFTK5QWE53YEYO/graph.json","events_json":"https://pith.science/api/pith-number/BXL4R2XK6JODNFTK5QWE53YEYO/events.json","paper":"https://pith.science/paper/BXL4R2XK"},"agent_actions":{"view_html":"https://pith.science/pith/BXL4R2XK6JODNFTK5QWE53YEYO","download_json":"https://pith.science/pith/BXL4R2XK6JODNFTK5QWE53YEYO.json","view_paper":"https://pith.science/paper/BXL4R2XK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0908.3810&json=true","fetch_graph":"https://pith.science/api/pith-number/BXL4R2XK6JODNFTK5QWE53YEYO/graph.json","fetch_events":"https://pith.science/api/pith-number/BXL4R2XK6JODNFTK5QWE53YEYO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BXL4R2XK6JODNFTK5QWE53YEYO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BXL4R2XK6JODNFTK5QWE53YEYO/action/storage_attestation","attest_author":"https://pith.science/pith/BXL4R2XK6JODNFTK5QWE53YEYO/action/author_attestation","sign_citation":"https://pith.science/pith/BXL4R2XK6JODNFTK5QWE53YEYO/action/citation_signature","submit_replication":"https://pith.science/pith/BXL4R2XK6JODNFTK5QWE53YEYO/action/replication_record"}},"created_at":"2026-05-18T02:12:22.745130+00:00","updated_at":"2026-05-18T02:12:22.745130+00:00"}